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The AI Engine Diagnostic feature (available on T2 and T3 subscription tiers) generates a plain-English health report for your engine based on sensor data collected by d3kOS. Here is exactly what it does and what it cannot do.
What data it analyses. The AI reads engine RPM, coolant temperature, oil pressure, alternator voltage, and engine hours from the NMEA 2000 bus. It also reads the historical trend of each value from the d3kOS database — typically the last 20 to 50 engine hours depending on how much data is available.
What the report contains. The report is generated by the Gemini AI model and written in plain English. It identifies values that are outside normal range, patterns that suggest developing problems (gradual coolant temperature rise, declining oil pressure at a given RPM), and maintenance items based on engine hours. It does not diagnose specific component failures — it identifies patterns worth investigating.
How to generate a report. On the dashboard, open the Engine panel and tap AI Engine Diagnostic. The report generates in 15 to 30 seconds and can be downloaded as a PDF. The PDF is saved to your account and accessible from any device.
What it cannot do. The AI cannot physically inspect your engine. It cannot diagnose problems that do not produce a sensor signal — a cracked impeller housing, a deteriorating fuel injector that has not yet affected RPM. It is a data analysis tool, not a replacement for a qualified marine mechanic. When the AI flags a concern, have a mechanic inspect the physical components.
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